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TPS22970

ACTIVE

3.6-V, 4-A, 4.7-mΩ load switch with output discharge

Product details

Number of channels 1 Vin (min) (V) 0.65 Vin (max) (V) 3.6 Imax (A) 4 Ron (typ) (mΩ) 4.7 Shutdown current (ISD) (typ) (µA) 1 Quiescent current (Iq) (typ) (µA) 35 Soft start Fixed Rise Time Current limit type None Features Quick output discharge, Thermal shutdown Rating Catalog Operating temperature range (°C) -40 to 105 FET Internal Device type Load switches Function Inrush current control, Thermal shutdown
Number of channels 1 Vin (min) (V) 0.65 Vin (max) (V) 3.6 Imax (A) 4 Ron (typ) (mΩ) 4.7 Shutdown current (ISD) (typ) (µA) 1 Quiescent current (Iq) (typ) (µA) 35 Soft start Fixed Rise Time Current limit type None Features Quick output discharge, Thermal shutdown Rating Catalog Operating temperature range (°C) -40 to 105 FET Internal Device type Load switches Function Inrush current control, Thermal shutdown
DSBGA (YZP) 8 2.8125 mm² 2.25 x 1.25
  • Input Voltage Range (VIN): 0.65 V to 3.6 V
  • On-Resistance
    • RON = 4.7 mΩ (Typical) at VIN ≥ 1.8 V
    • RON = 5.1 mΩ (Typical) at VIN = 1.05 V
    • RON = 6.4 mΩ (Typical) at VIN = 0.65 V
  • Maximum Continuous Switch Current (IMAX): 4 A
  • ON State (IQ): 30 µA (Typical) at VIN > 1.2 V
  • OFF State (ISD): 1 µA (Typical) at VIN > 1.8 V
  • Controlled Slew Rate to Avoid Inrush Current
    • 3.6 V Turn-ON time (tON): 1530 µs
    • 0.65 V Turn-ON time (tON): 815 µs
  • Low Threshold Enable (ON) Supports Use of Logic as Low as 0.9 V (VIH) of Logic
  • Thermal Shutdown (TSD)
  • Quick Output Discharge (QOD): 150-Ω (Typical)
  • Input Voltage Range (VIN): 0.65 V to 3.6 V
  • On-Resistance
    • RON = 4.7 mΩ (Typical) at VIN ≥ 1.8 V
    • RON = 5.1 mΩ (Typical) at VIN = 1.05 V
    • RON = 6.4 mΩ (Typical) at VIN = 0.65 V
  • Maximum Continuous Switch Current (IMAX): 4 A
  • ON State (IQ): 30 µA (Typical) at VIN > 1.2 V
  • OFF State (ISD): 1 µA (Typical) at VIN > 1.8 V
  • Controlled Slew Rate to Avoid Inrush Current
    • 3.6 V Turn-ON time (tON): 1530 µs
    • 0.65 V Turn-ON time (tON): 815 µs
  • Low Threshold Enable (ON) Supports Use of Logic as Low as 0.9 V (VIH) of Logic
  • Thermal Shutdown (TSD)
  • Quick Output Discharge (QOD): 150-Ω (Typical)

The TPS22970 is a small, space-saving load switch with controlled Turn-ON to reduce inrush current. The device contains an N-channel MOSFET that can operate over an input voltage range of 0.65 V to 3.6 V and pulsed switch currents up to 4 A. An integrated charge pump biases the NMOS switch in order to achieve a minimum switch ON resistance (RON). The switch is controlled by an on and off input (ON), which is capable of interfacing directly with low-voltage control signals.

The TPS22970 is capable of thermal shutdown when the junction temperature is above the threshold, turning the switch off. The switch turns on again when the junction temperature stabilizes to a safe range.

The TPS22970 has a 150-Ω on-chip resistor for quick discharge of the output when switch is disabled to avoid any unknown state caused by floating supply to the downstream load.

The TPS22970 has an internally controlled rise time in order to reduce inrush current.

The TPS22970 is available in an ultra-small, space saving 8-pin WCSP package and is characterized for operation over the free-air temperature range of –40°C to +105°C.

The TPS22970 is a small, space-saving load switch with controlled Turn-ON to reduce inrush current. The device contains an N-channel MOSFET that can operate over an input voltage range of 0.65 V to 3.6 V and pulsed switch currents up to 4 A. An integrated charge pump biases the NMOS switch in order to achieve a minimum switch ON resistance (RON). The switch is controlled by an on and off input (ON), which is capable of interfacing directly with low-voltage control signals.

The TPS22970 is capable of thermal shutdown when the junction temperature is above the threshold, turning the switch off. The switch turns on again when the junction temperature stabilizes to a safe range.

The TPS22970 has a 150-Ω on-chip resistor for quick discharge of the output when switch is disabled to avoid any unknown state caused by floating supply to the downstream load.

The TPS22970 has an internally controlled rise time in order to reduce inrush current.

The TPS22970 is available in an ultra-small, space saving 8-pin WCSP package and is characterized for operation over the free-air temperature range of –40°C to +105°C.

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Technical documentation

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Type Title Date
* Data sheet TPS22970 3.6-V, 4-A, 4.7-mΩ On-Resistance Load Switch datasheet (Rev. A) PDF | HTML 20 Jul 2017
Application note Load Switch Thermal Considerations (Rev. A) 11 Oct 2018
Application note Basics of Load Switches (Rev. A) 05 Sep 2018
Application note Selecting a Load Switch to Replace a Discrete Solution 30 Apr 2017
Application note Timing of Load Switches 27 Apr 2017
User guide TPS22970 Load Switch Evaluation Module 30 Nov 2016
Application note Fundamentals of On-Resistance in Load Switches 09 Jun 2016
Application note Quiescent Current vs Shutdown Current for Load Switch Power Consumption 30 Mar 2016
Application note Managing Inrush Current (Rev. A) 28 May 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS22970EVM — TPS22970 3.6V, 4A, 5.3mΩ On-Resistance Load Switch Evaluation Module

The TPS22970 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS22970 load switch. The TPS22970EVM allows the user to apply different input voltages (0.65-V to 3.6-V) under different loading conditions (0-A to 4-A) to the TPS22970. Output, input, and switching (...)

User guide: PDF
Not available on TI.com
Simulation model

TPS22970 Unencrypted PSpice Transient Model Package (Rev. A)

SLVMC66A.ZIP (63 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Package Pins CAD symbols, footprints & 3D models
DSBGA (YZP) 8 Ultra Librarian

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